First published in 1751, The Tutor’s Assistant became one of the best-selling mathematical books for over a century.more...

‘An incomplete listing comprises 276 editions, the last in 1885... The York editions, starting in 1797, were corrected by Thomas Crosby of that city’ (Wallis in Oxford DNB).’ Crosby also published a popular Key to the book, which itself ran to many editions.

‘This book is by far the most used of all school-books, and deserves to stand high among them’ (De Morgan, Arithmetical Books, 1847, 80, cited by Wallis). .see full details